Low-power secret-key agreement over OFDM

• Type: Article in International Conference Proceedings Book
• Date: 2013

Authors

Renna, F (Author) FCUP; Laurenti, N (Author) Other; Tomasin, S (Author) Other; Baldi, M (Author) Other; Maturo, N (Author) Other; Bianchi, M (Author) Other; Chiaraluce, F (Author) Other; Bloch, M (Author) Other

Conference proceedings International

Title: HotWiSec 2013 - Proceedings of the 2013 ACM Workshop on Hot Topics on Wireless Network Security and Privacy

Pages: 43-47

2013 2nd ACM Workshop on Hot Topics on Wireless Network Security and Privacy, HotWiSec 2013

Budapest, 19 April 2013 through 19 April 2013

Indexing

Scopus - 9 Citations

Other information

Authenticus ID: P-009-52E

DOI: 10.1145/2463183.2463194

Abstract (EN): Information-theoretic secret-key agreement is perhaps the most practically feasible mechanism that provides unconditional security at the physical layer to date. In this paper, we consider the problem of secret-key agreement by sharing randomness at low power over an orthogonal frequency division multiplexing (OFDM) link, in the presence of an eavesdropper. The low power assumption greatly simplifies the design of the randomness sharing scheme, even in a fading channel scenario. We assess the performance of the proposed system in terms of secrecy key rate and show that a practical approach to key sharing is obtained by using low-density parity check (LDPC) codes for information reconciliation. Numerical results confirm the merits of the proposed approach as a feasible and practical solution. Moreover, the outage formulation allows to implement secret-key agreement even when only statistical knowledge of the eavesdropper channel is available. Copyright 2013 ACM.

Language: English

Type (Professor's evaluation): Scientific